Home / 11,331.95-16,979.10-6,940.17

Finding the Fourth Proportional to 11,331.95, 16,979.10 and 6,940.17

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Solution

The fourth proportional to 11,331.95, 16,979.10 and 6,940.17 is: 10,398.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,331.95 : 16,979.10 = 6,940.17 : x
  2. Step 2: Convert to fraction form
    11,331.95/16,979.10 = 6,940.17/x
  3. Step 3: Cross multiply
    11,331.95x = 16,979.10 × 6,940.17
  4. Step 4: Simplify right side
    11,331.95x = 117,837,840.45
  5. Step 5: Solve for x
    x = 117,837,840.45/11,331.95
  6. Step 6: Final answer
    x = 10,398.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.